Significant figures are important in measurements and calculations, and you are going to see them quite often in chemistry. If you have already seen them, there is a chance that you feel slightly lost on getting the point of using … Read more
In this set of practice questions, we will go over the main types of questions on calorimetry including the heat capacity, the heat of reaction, finding the final temperature of a mixture, constant pressure calorimetry, and constant-volume calorimetry. A few … Read more
In these practice problems, we will work on determining the density, volume, and the mass of different objects. First, density is calculated by the ratio of the mass and the volume of the object: For example, what is … Read more
In the previous post, we talked about conversion factors and their use in dimensional analysis. Remember, in short, the conversion factors are the ratios of the units for the given quantity. For example, we know that 1 ft is 12 … Read more
All the measurements such as quantity, length, and volume are given with a number and a unit. For example, 2.5 lb, 35 miles, 15 gallons and etc. Now, these units are familiar to you if you live in a country … Read more
“Do we have to convert the Celsius to Kelvin?” is the question that I probably heard the most common when solving practice problems on gas laws in class. And the short answer is yes, it is almost always necessary to … Read more
The ideal gas laws show the correlation of the temperature, pressure, volume, and the amount of a gas. It is derived from the individual gas laws such as the Boyle’s law, Charles’ law, etc. Remember, when discussing those, we used … Read more
The Avogadro’s Law studies the correlation between the amount of the gases (mole) and the volume of an ideal gas. To demonstrate it, we can use a pump equipped with a freely moving plunger that is filled with an ideal … Read more
The Gay-Lussac’s law demonstrates the relationship between the pressure and the temperature of an ideal gas. Let’s illustrate it by using a pump with a barrel that is held at a fixed position to prevent changing the volume. The pump … Read more
The Charle’s law shows the correlation between the temperature and the volume of an ideal gas. Let’s discuss it by using a pump with a freely moving plunger that is filled with some gas. In the experiment, we are going … Read more
